Question

How many protons are in Calcium? (* Hint: The Atomic number of Calcium is 20).

Question 5 options:

11


2


5


20

Answer 1

The answer to your question is: 20

Step-by-step explanation:

Atomic number is the number of proton and atom has. Each element has a specific number of protons, if the number of protons change, then this is a new element.

Mass number is the number of protons and neutrons and atom has.

Mass number = protons + neutrons

Data

Number of protons = ?

Atomic number = 20

Then,

atomic number = number of protons = 20